I guess I'm sitting on the fence on the synthetic/dyno argument because I use a semi-synthetic.
Been using Brad Penn 20-50 and Redline MT-90 since the car was new from the dealer. I keep plenty in stock! Engine oil changes every 10k or yearly and Blackstone analysis every other oil change. Nothing abnormal showing on the tests. This is in FL and on a street car with no track days. I do use a full synthetic in my track cars though.
